The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX.  However, all but the
simplest uses become complicated quickly.  In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
        perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg'  "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spi...@gmail.com>
---
 t/t5538-push-shallow.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/t/t5538-push-shallow.sh b/t/t5538-push-shallow.sh
index ceee95b..ecbf84d 100755
--- a/t/t5538-push-shallow.sh
+++ b/t/t5538-push-shallow.sh
@@ -104,7 +104,7 @@ EOF
 '
 
 test_expect_success 'push from full to shallow' '
-       ! git --git-dir=shallow2/.git cat-file blob `echo 1|git hash-object 
--stdin` &&
+       ! git --git-dir=shallow2/.git cat-file blob $(echo 1|git hash-object 
--stdin) &&
        commit 1 &&
        git push shallow2/.git +master:refs/remotes/top/master &&
        (
@@ -117,7 +117,7 @@ test_expect_success 'push from full to shallow' '
 3
 EOF
        test_cmp expect actual &&
-       git cat-file blob `echo 1|git hash-object --stdin` >/dev/null
+       git cat-file blob $(echo 1|git hash-object --stdin) >/dev/null
        )
 '
 test_done
-- 
2.3.3.GIT

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